1 / 10Nissei DG-503MAX Digital SWR and Power Meter for Analog and Digital Radios
Brand: Nissei
In stock
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- Ships from
- US
- Format
- Buy It Now
Sold by
buytwowayradios
22,798 feedback · 99.9 positive
Specifications
- Type
- Nissei
- Brand
- Nissei
- Model
- DG-503MAX
About this product
This model measures NXDN (FDMA) and DMR (TDMA) digital radios. The Nissei DG-503MAX is a digital power and S.W.R. meter for analog and digital two way radios with a maximum measurable power range of up to 200W. It has UHF Female (SO-239) in and out connectors. highly accurate for measuring Forward Power, Reflected Powe…Read full descriptionShow less
This model measures NXDN (FDMA) and DMR (TDMA) digital radios.
The Nissei DG-503MAX is a digital power and S.W.R. meter for analog and digital two way radios with a maximum measurable power range of up to 200W. It has UHF Female (SO-239) in and out connectors.
- highly accurate for measuring Forward Power, Reflected Power, and the VSWR of Analog and Digital transceivers
- Large LCD (3.5″) backlit display for easy of reading
- Measurement (Analog mode): CW, FM, FDMA
- Measurement (MAX mode): DMR (TDMA), AM, SSB
- Calibration point: 28 / 145 / 435 MHz
- Maximum measurable power range up to 200W
- Minimum Power for SWR 1W
- Checks your antenna SWR
- Checks your radio RF power wattage
- Easy to install
- DC Power source :internal “AAA” batteries / external USB port
- Applicable rechargeable battery.
- Micro USB – DC 5V output (does not include adapter).
- Convenient control layout for easy operation.
- Frequency range: 1.6-60 MHz / 125-525 MHz
- Insertion Loss: Less than 0.1 dB
- Testing functions: Fwd/Rev Power, SWR ratio
- Accuracy: (AVG) + / - 5%
- Impedance: 50 Ohm
- Interface (in and out): UHF female (SO-239)
- Includes operation manual and DC 12V wire
- Model number: DG-503MAX
- Dimensions: 5.51 in.(W) x 3.30 in. (H) x 4.80 in. (D) / 140 x 84 x 122 mm
- Net Weight: 1.65 lbs. / 750g
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1 listing from 1 seller. Prices update periodically. Only one listing of this exact product was found; more sellers appear here as they are discovered.
- Lowest price
- $189.99
- Offers
- 1from 1 seller
| Seller | Condition | Ships from | Price | Shipping | Delivery & returns | Total | |
|---|---|---|---|---|---|---|---|
buytwowayradios via eBay 99.9% positive · 22,798 ratings Highly rated seller | New | United States | $189.99Lowest price | Free | Est. Oct 28 – Oct 31 | $189.99 | View Deal |
Seller ratings are the feedback eBay reports for each seller. "Highly rated" means at least 98% positive from at least 100 ratings. Total = price + shipping, shown only when the listing states its shipping cost.
Price history
Lowest price available each day, tracked since Oct 7, 2026 (22 days).
- Current lowest
- $189.99
- Previous price
- No change yet
- Lowest recorded
- $189.99
- Highest recorded
- $189.99
- Trend
- → Stable
- since Oct 7
The lowest price for all conditions has not changed in this period, so there is no trend to chart yet.
History is built only from prices this site observed, starting the day tracking began; nothing is estimated or back-filled. Each point is the lowest price among the offers available that day. Shipping, duties and taxes are not included.
